A random experiment means that: MCQ with Answer and Explanation

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A random experiment means that:

A. The experiment always gives the same result

B. The outcomes are uncertain but the set of all possible outcomes is known

C. The experiment has no outcome

D. The outcome can be predicted exactly

Answer: Option B

Solution (By JKSSB Mock Tests)

In a random experiment, the result is not predictable with certainty but all possible outcomes are known.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The sum of deviations of all values from the median is minimized when measured in:

A. Cubed deviations

B. Absolute deviations

C. Squared deviations

D. Relative deviations

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Correct Answer: Option B

Explanation:
Median minimizes sum of absolute deviations.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Perinatal Mortality Rate is a key indicator for:

A. Environmental pollution levels

B. Effectiveness of maternal and newborn health interventions around childbirth

C. Economic growth

D. Educational attainment

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Correct Answer: Option B

Explanation:
Perinatal mortality reflects the quality of antenatal care, skilled attendance at birth, and immediate newborn care, making it a sensitive measure for evaluating maternal-child health programs.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The harmonic mean of the numbers 3, 6, 9 is:

A. 18/11

B. 6

C. 54/11

D. 11/54

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Correct Answer: Option C

Explanation:
HM = 3 / (1/3 + 1/6 + 1/9) = 3 / ( (6+3+2)/18 ) = 3 / (11/18) = 54/11 ≈ 4.909.

This question belongs to: Accountancy and Statistics Statistics

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